Insulator for railway-trucks.



' J. M. WOOD, DEUD. s. B. STROTHER, ADMINISTRATOR.

INSULATOR FOB. RAILWAY TRUCKS.

APPLICATION II LIBD DBO. 22, 1908.

97 13& Patented May3,1910.

11v VEN role. (Tame; M. 7460i,

A TTOR/VEYv UNITED STATES PATENT OFFICE.

JAMES woozo, or KANSAS CITY, MISSOURI; SAM 1a. STROTHER, ADMINISTRATOR or SAID JAMES M. woon, DECEASED, AssIGNoR To-KATIInnINn G. SMITH, or KANSAS CITY, -MISSOURI.

INSULATOR FOR RAILWAY-TRUCKS.

Specification of Letters Patent. Patgnted May3, 1910,

Application filed December 22, 1908. Serial No. 468,736.

To all whom it may concern: J

Be it known that I, JAMES M. Woon, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri haveinvented certain new and useful Imprd 'ements in Insulators for Railway-Trucks, of which the following is a specification.

M invention relates to improvements in insu ators for railway trucks, and consists in the construction, combination, and arrangement' of 'parts hereinafter described and pointed out in the claim, and in order that Said invention may be fully understood, reference will now be made to the accompanydrawing, in which:

igure 1 represents a side elevation partly broken away of a six-wheeled car-truck. Fig. 2 is a broken cross section on line IIII of Fi 1. Fi 3 is a broken vertical section 0% one of t e journal-boxes of the truck. Fig. 4 is a cross section on line IV-IV of Fig. 3.

1 designates the truck which consists of a rectan ular frame 2, a plurality of wheels 3, journa 4 upon which said wheels are fixed, boxes 5 resting upon said journals, equalizers 6 restin upon the boxes 5, coil-springs 7 interposed etween frame 2 and the equalizers 6, jaws 8 depending from frame 2 and enga ing thesides of boxes 5, bolsters 9 secur to-fraine 2 and the equalizers 6,-and elliptical springs 10 interposed between. said bolsters. Boxes 5 are equipped with the customary bearings 11, resting upon journals 4, and wedges 12 interposed between.

v Witnesses:

said bearings and the upper inner sides of the boxes, said bearings and wedges having adjacent edges of inverted V-form.

13 designates an insulator of inverted V- form, interposed between the bearing 11 and for the purpose the wedge 12 of each box, of preventing the generation of electrical currents incident to the friction roduced between the revolving journal 4 an its bearing 11. Said insulator consists, preferably, of asbestos for absorbing and preventing the transmission of heat from bearing 11 to its box and the adjacent portions of the truck.

In order to render the operation of the truck practically noiseless, and for the purpose of absorbing shocks incident to said truck traveling over rough tracks, I interpose cushions 14 between the tops of boxes 5 and the ends of the equalizers 6, cushions 15 between bolsters 9 and the elliptical springs 10, and cushions 16 between the coil-springs 7 and their sockets 17 Having thus described my invention, what I claim is In a railway truck, the combination of a ournal-box, a journal mounted therein, a caring for said journal, a wedge for securing said bearing in position, and an inverted V-shaped insulator interposed between said bearing and the wedge.

In testimony whereof I aflix my signature, in thepresence of two witnesses.

I JAMES 'M. WOOD.

' F.'G. F soHnR,

'MQCox. 

